dwarf_pro_macinfo.c revision 1.4 
1/*	$NetBSD: dwarf_pro_macinfo.c,v 1.4 2022/05/01 17:20:47 jkoshy Exp $	*/
2
3/*-
4 * Copyright (c) 2010 Kai Wang
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include "_libdwarf.h"
30
31__RCSID("$NetBSD: dwarf_pro_macinfo.c,v 1.4 2022/05/01 17:20:47 jkoshy Exp $");
32ELFTC_VCSID("Id: dwarf_pro_macinfo.c 2074 2011-10-27 03:34:33Z jkoshy");
33
34static int
35_dwarf_add_macro(Dwarf_P_Debug dbg, int type, Dwarf_Unsigned lineno,
36    Dwarf_Signed fileindex, char *str1, char *str2, Dwarf_Error *error)
37{
38	Dwarf_Macro_Details *md;
39	int len;
40
41	dbg->dbgp_mdlist = realloc(dbg->dbgp_mdlist,
42	    (size_t) dbg->dbgp_mdcnt + 1);
43	if (dbg->dbgp_mdlist == NULL) {
44		DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
45		return (DW_DLV_ERROR);
46	}
47
48	md = &dbg->dbgp_mdlist[dbg->dbgp_mdcnt];
49	dbg->dbgp_mdcnt++;
50
51	md->dmd_offset = 0;
52	md->dmd_type = type;
53	md->dmd_lineno = lineno;
54	md->dmd_fileindex = fileindex;
55	md->dmd_macro = NULL;
56
57	if (str1 == NULL)
58		return (DW_DLV_OK);
59	else if (str2 == NULL) {
60		if ((md->dmd_macro = strdup(str1)) == NULL) {
61			dbg->dbgp_mdcnt--;
62			DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
63			return (DW_DLV_ERROR);
64		}
65		return (DW_DLV_OK);
66	} else {
67		len = strlen(str1) + strlen(str2) + 2;
68		if ((md->dmd_macro = malloc(len)) == NULL) {
69			dbg->dbgp_mdcnt--;
70			DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
71			return (DW_DLV_ERROR);
72		}
73		snprintf(md->dmd_macro, len, "%s %s", str1, str2);
74		return (DW_DLV_OK);
75	}
76}
77
78int
79dwarf_def_macro(Dwarf_P_Debug dbg, Dwarf_Unsigned lineno, char *name,
80    char *value, Dwarf_Error *error)
81{
82
83	if (dbg == NULL || name == NULL) {
84		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
85		return (DW_DLV_ERROR);
86	}
87
88	return (_dwarf_add_macro(dbg, DW_MACINFO_define, lineno, -1, name,
89	    value, error));
90}
91
92int
93dwarf_undef_macro(Dwarf_P_Debug dbg, Dwarf_Unsigned lineno, char *name,
94    Dwarf_Error *error)
95{
96
97	if (dbg == NULL || name == NULL) {
98		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
99		return (DW_DLV_ERROR);
100	}
101
102	return (_dwarf_add_macro(dbg, DW_MACINFO_undef, lineno, -1, name,
103	    NULL, error));
104}
105
106int
107dwarf_start_macro_file(Dwarf_P_Debug dbg, Dwarf_Unsigned lineno,
108    Dwarf_Unsigned fileindex, Dwarf_Error *error)
109{
110
111	if (dbg == NULL) {
112		DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
113		return (DW_DLV_ERROR);
114	}
115
116	return (_dwarf_add_macro(dbg, DW_MACINFO_start_file, lineno, fileindex,
117	    NULL, NULL, error));
118}
119
120int
121dwarf_end_macro_file(Dwarf_P_Debug dbg, Dwarf_Error *error)
122{
123
124	if (dbg == NULL) {
125		DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
126		return (DW_DLV_ERROR);
127	}
128
129	return (_dwarf_add_macro(dbg, DW_MACINFO_end_file, 0, -1,
130	    NULL, NULL, error));
131}
132
133int
134dwarf_vendor_ext(Dwarf_P_Debug dbg, Dwarf_Unsigned constant, char *string,
135    Dwarf_Error *error)
136{
137
138	if (dbg == NULL || string == NULL) {
139		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
140		return (DW_DLV_ERROR);
141	}
142
143	return (_dwarf_add_macro(dbg, DW_MACINFO_vendor_ext, constant, -1,
144	    string, NULL, error));
145}
146